Update wan2_fast.py

wan2_fast.py

@@ -150,8 +150,35 @@ MAX_SEED = np.iinfo(np.int32).max
 FIXED_FPS = 24
 MIN_FRAMES_MODEL = 25
 MAX_FRAMES_MODEL = 193
+
+
+
+
 IS_ORIGINAL_SPACE = os.environ.get("IS_ORIGINAL_SPACE", "True") == "True"
 
+
+# Conservative limits for low-end environments
+LIMITED_MAX_RESOLUTION = 640
+LIMITED_MAX_DURATION = 2.0
+LIMITED_MAX_STEPS = 4
+
+# Generous limits for local or Pro spaces
+ORIGINAL_SLIDER_MIN_H, ORIGINAL_SLIDER_MAX_H = 128, 1536
+ORIGINAL_SLIDER_MIN_W, ORIGINAL_SLIDER_MAX_W = 128, 1536
+ORIGINAL_MAX_DURATION = round(81 / 24, 1)  # 3.4 seconds
+ORIGINAL_MAX_STEPS = 8
+
+if IS_ORIGINAL_SPACE:
+    SLIDER_MIN_H, SLIDER_MAX_H = 128, LIMITED_MAX_RESOLUTION
+    SLIDER_MIN_W, SLIDER_MAX_W = 128, LIMITED_MAX_RESOLUTION
+    MAX_DURATION = LIMITED_MAX_DURATION
+    MAX_STEPS = LIMITED_MAX_STEPS
+else:
+    SLIDER_MIN_H, SLIDER_MAX_H = ORIGINAL_SLIDER_MIN_H, ORIGINAL_SLIDER_MAX_H
+    SLIDER_MIN_W, SLIDER_MAX_W = ORIGINAL_SLIDER_MIN_W, ORIGINAL_SLIDER_MAX_W
+    MAX_DURATION = ORIGINAL_MAX_DURATION
+    MAX_STEPS = ORIGINAL_MAX_STEPS
+
 default_prompt_t2v = "cinematic footage, group of pedestrians dancing in the streets of NYC, high quality breakdance, 4K, tiktok video, intricate details, instagram feel, dynamic camera, smooth dance motion, dimly lit, stylish, beautiful faces, smiling, music video"
 default_negative_prompt = "Bright tones, overexposed, static, blurred details, subtitles, style, works, paintings, images, static, overall gray, worst quality, low quality, JPEG compression residue, ugly, incomplete, extra fingers, poorly drawn hands, poorly drawn faces, deformed, disfigured, misshapen limbs, fused fingers, still picture, messy background, three legs, many people in the background, walking backwards, watermark, text, signature"